Number of n X n (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(n+1) binary array.
A226709
Number of n X n (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(n+1) binary array.
Terms
- a(0) =3a(1) =71a(2) =4671a(3) =977939a(4) =833949273
External references
- oeis: A226709